Kinetoscope-shutter.



W. H. G. DUDLEY. JR.

KINETOSGOPE SHUTTER.

APPLXCATIDN FILED $138.23. 1911.

Patented Dec. 12, 1911.

WITNESSES ,fi zmnm I "manure WILLIAM H. C. DUDLEY, JR, OF AMERICUS, GEORGIA.

KINETOSCOPE-SHUTTEB.

Specification of Letters latent.

Patented Dec. 12, 1911.

Application filed February 23, 1911. Serial No. 610,206.

To all whom it my concern:

Be it known that I, \VlnLIAM H. G. Donnnv. Jr., a citizen of the United States, and a resident of Americus, in the county of Sumter and State of Georgia, have invent-- ed a new and Improved Kinetoscope-Shutter, of which the following is a full, clear, and exact description.

The principal object which the present invention has in view is to provide a shutter the operation whereof produces an obscuration known as fading, and an illumination of a similar character.

lVith this object in view the invention consists in constructing a rotary disk to travel in front of-the projecting lens of a moving picture machine, having formed in the path of the light, one or more elongated curved openings, said openings being divided lengthwise from the median section of each opening by means of tongue-like members. said members being gradually in creased in width toward the obscuration sections of the disk.

One embodiment of the present invention is disclosed in the structure illustrated in the accompanying drawings, in which like characters of reference denote corrcspondiiig parts in both views, and in which- Figure 1 is a perspective view of a kjnetoscope head,-showing in conjunction there-. with a shutter constructed and arranged in accordance with the present invention; and Fig. 2 is a side view of ed and arranged in accordance present invention.

lhe head shown in the drawings is of usual construction,

with the having a pro ectmg lens A and an operating crank handle B. Connected with a. train of gear wheels C and D is a counter shaft which crosses to the. opposite side of the bed from that shown in Fig. l, and is there suitably connected with the shaft 7. Fixedly clamped. on the shaft 7 by means of a washer 8 is a circular disk 9. The disk 9 is constructed of any suitable material, such as blackened ca board. or, if desired, suitable light-weight metal. The

center of the disk 9 is provided, with a perforation 10 through which is extended the shaft 7. Dispose on opposite sides of the center of the disk 9 are the light openings 11', 11. The openings 11 are constructa shutter constructadjacently disposed, and

disk shutter; having concentrically ed substantially as shown in Fig. 2 of the drawings and are divided centrally by tongues 12. The tongues 12 are extended from the full light area b to the complete obscuration area 0. The length of the distance between the points on the tongues 12 and the base lines of the tongues 12 is formed to provide the proportionate light and dark periods desired in moving picture work. v By reason of the sha e of the tongues 12 it-will be noted that the i ht is obscured from the center of the lens to travel lat.- erally on the horizontal-diameter of the said lens. In other words, the shadow cast by the obscuring tongue would divide the light on the spot or lighted area of the screen; laterally. the greatest amount of light on the spot being at the edges thereof on the horizontal diameter.

The gradual fading and lighting of the spot. when the photograph or transparency is being exposed reduce the effect of fading the picture, and thus avoids the flickering ohjectionably noticeable in moving picture exhibitions. By so fading and developing the picture the,- shutter works in harmony with the retina of the human eye.

I Having thus described my inventiomwhat,

I claim as new and desire to secure by Letters Patent is:

1. As an article of manufacture, a rotary disk shutter'Jim-ving concentrically arranged an open slot, tongue extending lengthwise )f said slot, said tongue qxtending across the slot at the endthereof to'form at. each side of said tongue two openings. the edges whereof are converged toward the base of the tongue.

- 2. As an article of manufacture; a rotary disk shutter, having concentrically arranged on open slot, and provided with a plurality of pointed tongues oppositely extended in said slot, the converged ends whereof are said tongues being shaped to extend 'across said slot at the base of said tongues to form on opposite sides ofsaid tongues gradually contracted passages.

3. As an article of manufacture, a rotary a plurality of 0 en slots equidistant from the center of sai disk and providedin-each slot. with a pointed tongue.

'4. As an article of manufacture, a rotary and provided with a pointed.

arranged disk shutter, having coln-u'utricaliy arranged name to this specification in the pmsenm 01 a plurality nf open slots equidistant frum two subscribing witnesses.

[he ccnlur of said disk and prnvided in each r I, X a

sit)! \viih a plurality of lougucs, said tongues ILLIAM DUDIJIA r being pointed and extended from the. median \Vitnesses:

area of said slots. N. M. Dummy,

In testimony whereof have signed my 'I. M. Eumwcu. 

